FERROXCUBE DATA SHEET 4B1 Material specification Supersedes data of September 2004 2008 Sep 01 Ferroxcube Material specification 4B1 4B1 SPECIFICATIONS Medium permeability NiZn ferrite for use in wideband EMI-suppression (30 - 1000 MHz) as well as RF tuning, wideband and balun transformers. SYMBOL µi B tanδ/µi ρ TC density CONDITIONS VALUE 25 °C; ≤10 kHz; 0.25 mT 25 °C; 10 kHz; 3000 A/m 100 °C; 10 kHz; 3000 A/m 25 °C; 1 MHz; 0.25 mT 25 °C; 3 MHz; 0.25 mT DC; 25 °C UNIT 250 ±20% ≈ 360 MBW290 10 3 handbook, halfpage µ's , µ''s mT 4B1 µ's 2 10 ≈ 310 µ''s ≤ 90 × 10 −6 10 ≤ 300 × 10−6 ≈ 105 ≥ 250 ≈ 4 600 Ωm °C kg/m3 1 1 Fig.1 500 400 300 300 200 200 100 100 Fig.2 2008 Sep 01 100 300 T ( o C) 25 oC 100 oC B (mT) 400 0 103 Complex permeability as a function of frequency. handbook, halfpage 4B1 µi 0 50 f (MHz) MBW292 MBW291 500 handbook, halfpage 102 10 0 100 500 Initial permeability as a function of temperature. 0 100 200 4B1 1000 2000 H (A/m) Fig.3 Typical B-H loops. 229 Ferroxcube Material specification 4B1 DATA SHEET STATUS DEFINITIONS DATA SHEET STATUS PRODUCT STATUS DEFINITIONS Preliminary specification Development This data sheet contains preliminary data. Ferroxcube reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. Product specification Production This data sheet contains final specifications. Ferroxcube reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. DISCLAIMER Life support applications These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Ferroxcube customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Ferroxcube for any damages resulting from such application. PRODUCT STATUS DEFINITIONS STATUS INDICATION DEFINITION Prototype These are products that have been made as development samples for the purposes of technical evaluation only. The data for these types is provisional and is subject to change. Design-in These products are recommended for new designs. Preferred These products are recommended for use in current designs and are available via our sales channels. Support These products are not recommended for new designs and may not be available through all of our sales channels. Customers are advised to check for availability. 2008 Sep 01 230